start

seed = 5 -- slot5 = 20 seeds . slot6 = 1 seed. slot7 = 1 seed. slot8 = 1 seed.
wheat = 9 -- slot9 = 1 wheat. slot10 = 1 wheat. slot11 = 1 wheat. slot12 = 1 wheat.
coal = 4

function reFuel()

    turtle.select(4)
    if turtle.getFuelLevel() < 324 then
       turtle.suck(5)
       turtle.refuel()
    end
    turtle.suck(1)
    turtle.turnLeft()
    turtle.forward()
end

function depositWheat()

   turtle.turnRight()
   for i =9,12 do
     turtle.select(i)
     turtle.drop(turtle.getItemCount(i)-1)
   end
end

function depositSeed()

   turtle.turnLeft()
   turtle.select(5)
   turtle.dropUp(turtle.getItemCount(5)-20)
   for i = 6,8 do
     turtle.select(i)
     turtle.dropUp(turtle.getItemCount(i)-1)
   end
end

function moveRankLeft()

   turtle.select(seed)
   for i = 1,17 do
        turtle.digDown()
        turtle.placeDown()
        turtle.forward()
   end
   turtle.digDown()
   turtle.placeDown()
   turtle.turnLeft()
   turtle.forward()
   turtle.turnLeft()
end

function moveRankRight()
   turtle.select(seed)
   for i = 1,17 do
      turtle.digDown()
      turtle.placeDown()
      turtle.forward()
   end
   turtle.digDown()
   turtle.placeDown()
   turtle.turnRight()
   turtle.forward()
   turtle.turnRight()
end


function imcominghome()

   turtle.turnRight()
   for i = 1,18 do
     turtle.forward()
   end
   turtle.turnRight()
   turtle.forward()
   turtle.turnLeft()
end

reFuel()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
moveRankLeft()
moveRankRight()
imcominghome()
depositWheat()
depositSeed()